@article{ref1,
title="A rare case of a metal foreign body in the bladder",
journal="Khirurgiia",
year="1990",
author="Todorov, S. and Vŭtkov, R. and Vasev, K. and Iordanov, D.",
volume="43",
number="2",
pages="62-63",
abstract="<p>[Abstract unavailable]</p> <p>Language: bg</p>",
language="bg",
issn="0450-2167",
doi="",
url="http://dx.doi.org/"
}